Butterapfelplanke is filled with butter cream with bits and pieces of cooked apples with sugar as toppings. The word "planke" means "board" in German and my husband told me that the floor of the ships are make of "planken" (planks/boards). The bakeshop named all their cakes after their theme "maritime". My husband even noticed that the sales ladies are dressed in maritime uniforms and they greeted him with the word "ahoi", the greetings used by the seamen. Very interesting, indeed.
Here is the picture of this delectable cake, does it look like a "board"?